Unfired clay masonry: An introduction to low-impact building materials
BRE (Building Research Establishment) is an independent, research-based consultancy, testing and training organisation, operating in the built environment and associated industries.
Unfired clay masonry: An introduction to low-impact building materials, was written by A Sutton, D Black and P Walker and published by BRE on 18 October 2011.
It is one of a series of five information papers and case studies about low-impact building materials, which also cover; hemp lime, straw bale, cross-laminated timber and natural fibre insulation.
In comparison with some alternative construction products, unfired clay masonry is relatively low-impact, and it has one of the longest histories of use of any building material. It is relatively robust, fire-resistant, has high thermal mass and has the capacity to moderate internal humidity levels. However, unless stabilised, it is not resistant to prolonged water exposure and so it normally requires protection from rain.
This 6-page information paper provides an overview of the pros and cons of non-loadbearing unfired clay brick and block. It is intended for those considering the use of this material on construction projects.
[edit] Related articles on Designing Buildings Wiki
- Adobe.
- Arup and Better Shelter at the Working Together For Disaster Relief conference.
- Blockwork.
- BRE articles on Designing Buildings Wiki.
- BRE Buzz articles on Designing Buildings Wiki.
- BRE Buzz.
- Brick.
- Building Research Establishment.
- Clay.
- Cob building.
- Cross-laminated timber.
- Defects in brickwork
- Defects in stonework.
- Earth building.
- Earthen construction.
- Green building.
- Hempcrete.
- Masonry.
- Parapet.
- Practical Building Conservation: Earth, Brick and Terracotta.
- Straw bale construction.
- Terracotta.
Featured articles and news
We're expanding our collaborative mission by launching DB Intelligence, an exclusive market research advisory panel. Built environment professionals can now get paid to share their expertise on industry trends, products and services.
Panel members receive direct financial incentives for participating in research projects like short surveys, 1-2-1 interviews and focus groups. Register today to shape the future of the construction sector.
Building Control Independent Panel final report
A precis of a key report led by Dame Hackitt with full recommendations and link to the government response.
Guide to ISO 19650 for Architecture Firms (2026)
A user gives their low down.
A UK training and membership provider for mould remediation professionals.
Building Safety recap April, 2026
A short and longer run-through of the month, with links to further information and sources.
CIAT May 2026 briefing.
Independent NSI and BAFE study exploring how organisations are changing the way they buy fire safety services.
From medieval scribes to modern word art.
ECA welcomes crackdown on late payment and push for clean energy, whilst CIOB seek fixed cladding removal timeframes.
Cyber Security in the Built Environment
Protecting projects, data, and digital assets: A CIOB Academy TIS.
Managing competence in the built environment
ITFG publishes new industry guide on how to meet the ICC principles.
The UK's campaign to reduce noise pollution: Mythbusting, articles and topic guides.


















